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                <h1 id="vue-admin-template"><a href="#vue-admin-template" class="headerlink" title="vue-admin-template"></a>vue-admin-template</h1><h2 id="1-简介"><a href="#1-简介" class="headerlink" title="1.简介"></a>1.简介</h2><p>我们开发讲师管理界面可以通过集成好的前端框架vue-element-admin基础上进行开发。</p>
<span id="more"></span>
<p><strong>功能：</strong><a target="_blank" rel="noopener" href="https://panjiachen.github.io/vue-element-admin-site/zh/guide/#">https://panjiachen.github.io/vue-element-admin-site/zh/guide/#</a></p>
<p><strong>GitHub地址：</strong><a target="_blank" rel="noopener" href="https://github.com/PanJiaChen/vue-element-admin">https://github.com/PanJiaChen/vue-element-admin</a></p>
<p><strong>项目在线预览：</strong><a target="_blank" rel="noopener" href="https://panjiachen.gitee.io/vue-element-admin/#/login?redirect=%2Fdashboard">https://panjiachen.gitee.io/vue-element-admin</a></p>
<p>vue-admin-template是基于vue-element-admin的一套后台管理系统基础模板（最少精简版），可作为模板进行二次开发。</p>
<p><strong>GitHub地址：</strong><a target="_blank" rel="noopener" href="https://github.com/PanJiaChen/vue-admin-template">https://github.com/PanJiaChen/vue-admin-template</a></p>
<p><strong>建议：</strong>你可以在 <code>vue-admin-template</code> 的基础上进行二次开发，把 <code>vue-element-admin</code>当做工具箱，想要什么功能或者组件就去 <code>vue-element-admin</code> 那里复制过来。</p>
<p>我们这次选择功能更精简的vue-admin-template来进行前端页面的开发。</p>
<p>将下载解压好的文件复制到工作区，接着进入cmd</p>
<p>这里由于它并没有自带所需要的依赖，我们需要通过npm下载。但是有些依赖被墙了，我们需要通过淘宝的cnpm进行安装。</p>
<pre class="line-numbers language-bash" data-language="bash"><code class="language-bash">#安装cnpm
npm install -g cnpm --registry=https://registry.npm.taobao.org

#查看是否安装成功
cnpm -v

# 安装依赖
cnpm install

# 启动。执行后，浏览器自动弹出并访问http://localhost:9528/
npm run dev<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p><img src="https://pluto-1300780100.cos.ap-nanjing.myqcloud.com/img/image-20210117112424911.png" alt="image-20210117112424911"></p>
<h2 id="2-目录结构"><a href="#2-目录结构" class="headerlink" title="2.目录结构"></a>2.目录结构</h2><pre class="line-numbers language-none"><code class="language-none">. 
├── build // 构建脚本
├── config // 全局配置 
├── node_modules // 项目依赖模块
├── src //项目源代码
├── static // 静态资源
└── package.jspon // 项目信息和依赖配置<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<pre class="line-numbers language-none"><code class="language-none">src 
├── api // 各种接口 
├── assets // 图片等资源 
├── components // 各种公共组件，非公共组件在各自view下维护 
├── icons // 各种小图标
├── router // 路由表 
├── store // 存储 
├── styles // 各种样式 
├── utils // 公共工具，非公共工具，在各自view下维护 
├── views // 各种layout页面
├── App.vue //***项目顶层组件*** 
├── main.js //***项目入口文件***
└── permission.js //认证入口<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p><img src="https://pluto-1300780100.cos.ap-nanjing.myqcloud.com/img/image-20210117112254000.png" alt="image-20210117112254000"></p>
<h2 id="3-改造本地登录接口"><a href="#3-改造本地登录接口" class="headerlink" title="3.改造本地登录接口"></a>3.改造本地登录接口</h2><p>系统默认登陆地址不是我们定义的，我们需要改成我们之前写的本地8001端口</p>
<p><img src="https://pluto-1300780100.cos.ap-nanjing.myqcloud.com/img/image-20210117112748637.png" alt="image-20210117112748637"></p>
<p>进入config/dev.env.js修改基础url</p>
<pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript">module<span class="token punctuation">.</span>exports <span class="token operator">=</span> <span class="token function">merge</span><span class="token punctuation">(</span>prodEnv<span class="token punctuation">,</span> <span class="token punctuation">{</span>
  <span class="token constant">NODE_ENV</span><span class="token operator">:</span> <span class="token string">'"development"'</span><span class="token punctuation">,</span>
  <span class="token comment">// BASE_API: '"https://easy-mock.com/mock/5950a2419adc231f356a6636/vue-admin"',</span>
  <span class="token constant">BASE_API</span><span class="token operator">:</span> <span class="token string">'"http://localhost:8001"'</span><span class="token punctuation">,</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>接着我们查看api下的login.js，查看其引用的方法是谁定义的。通过一层一层引用发现vue-admin-template\src\store\modules\user.jsy定义了此方法。</p>
<pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript">actions<span class="token operator">:</span> <span class="token punctuation">{</span>
    <span class="token comment">// 登录</span>
    <span class="token function">Login</span><span class="token punctuation">(</span><span class="token parameter"><span class="token punctuation">{</span> commit <span class="token punctuation">}</span><span class="token punctuation">,</span> userInfo</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token keyword">const</span> username <span class="token operator">=</span> userInfo<span class="token punctuation">.</span>username<span class="token punctuation">.</span><span class="token function">trim</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
      <span class="token keyword">return</span> <span class="token keyword">new</span> <span class="token class-name">Promise</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token parameter">resolve<span class="token punctuation">,</span> reject</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
        <span class="token function">login</span><span class="token punctuation">(</span>username<span class="token punctuation">,</span> userInfo<span class="token punctuation">.</span>password<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">then</span><span class="token punctuation">(</span><span class="token parameter">response</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
          <span class="token keyword">const</span> data <span class="token operator">=</span> response<span class="token punctuation">.</span>data
          <span class="token function">setToken</span><span class="token punctuation">(</span>data<span class="token punctuation">.</span>token<span class="token punctuation">)</span>
          <span class="token function">commit</span><span class="token punctuation">(</span><span class="token string">'SET_TOKEN'</span><span class="token punctuation">,</span> data<span class="token punctuation">.</span>token<span class="token punctuation">)</span>
          <span class="token function">resolve</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
        <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">catch</span><span class="token punctuation">(</span><span class="token parameter">error</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
          <span class="token function">reject</span><span class="token punctuation">(</span>error<span class="token punctuation">)</span>
        <span class="token punctuation">}</span><span class="token punctuation">)</span>
      <span class="token punctuation">}</span><span class="token punctuation">)</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span>

    <span class="token comment">// 获取用户信息</span>
    <span class="token function">GetInfo</span><span class="token punctuation">(</span><span class="token parameter"><span class="token punctuation">{</span> commit<span class="token punctuation">,</span> state <span class="token punctuation">}</span></span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token keyword">return</span> <span class="token keyword">new</span> <span class="token class-name">Promise</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token parameter">resolve<span class="token punctuation">,</span> reject</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
        <span class="token function">getInfo</span><span class="token punctuation">(</span>state<span class="token punctuation">.</span>token<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">then</span><span class="token punctuation">(</span><span class="token parameter">response</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
          <span class="token keyword">const</span> data <span class="token operator">=</span> response<span class="token punctuation">.</span>data
          <span class="token keyword">if</span> <span class="token punctuation">(</span>data<span class="token punctuation">.</span>roles <span class="token operator">&amp;&amp;</span> data<span class="token punctuation">.</span>roles<span class="token punctuation">.</span>length <span class="token operator">&gt;</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token punctuation">{</span> <span class="token comment">// 验证返回的roles是否是一个非空数组</span>
            <span class="token function">commit</span><span class="token punctuation">(</span><span class="token string">'SET_ROLES'</span><span class="token punctuation">,</span> data<span class="token punctuation">.</span>roles<span class="token punctuation">)</span>
          <span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span>
            <span class="token function">reject</span><span class="token punctuation">(</span><span class="token string">'getInfo: roles must be a non-null array !'</span><span class="token punctuation">)</span>
          <span class="token punctuation">}</span>
          <span class="token function">commit</span><span class="token punctuation">(</span><span class="token string">'SET_NAME'</span><span class="token punctuation">,</span> data<span class="token punctuation">.</span>name<span class="token punctuation">)</span>
          <span class="token function">commit</span><span class="token punctuation">(</span><span class="token string">'SET_AVATAR'</span><span class="token punctuation">,</span> data<span class="token punctuation">.</span>avatar<span class="token punctuation">)</span>
          <span class="token function">resolve</span><span class="token punctuation">(</span>response<span class="token punctuation">)</span>
        <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">catch</span><span class="token punctuation">(</span><span class="token parameter">error</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
          <span class="token function">reject</span><span class="token punctuation">(</span>error<span class="token punctuation">)</span>
        <span class="token punctuation">}</span><span class="token punctuation">)</span>
      <span class="token punctuation">}</span><span class="token punctuation">)</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>经过分析我们发现进行登陆调用两个方法：login登录和getInfo获得用户信息方法。所以创建两个接口实现用户登录：</p>
<ol>
<li>login返回token值</li>
<li>getInfo返回 roles、name、avatar</li>
</ol>
<p>在service_edu模块下创建EduLoginController</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java">@RestController
@RequestMapping("/serviceedu/user")
@CrossOrigin
public class EduLoginController {

    @PostMapping("login")
    public R login(){
        return R.ok().data("token","admin");
    }

    @GetMapping("info")
    public R getInfo(){
        return R.ok().data("roles","[admin]").data("name","admin").data("avatar",
                "https://pluto-1300780100.cos.ap-nanjing.myqcloud.com/img/6b1790b161aeec44249833a4a4a8c017d60d247f.jpg@518w.jpg");
    }
}<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>修改login.js方法的url使之和接口对应</p>
<pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript"><span class="token keyword">export</span> <span class="token keyword">function</span> <span class="token function">login</span><span class="token punctuation">(</span><span class="token parameter">username<span class="token punctuation">,</span> password</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
  <span class="token keyword">return</span> <span class="token function">request</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
    url<span class="token operator">:</span> <span class="token string">'/serviceedu/user/login'</span><span class="token punctuation">,</span>
    method<span class="token operator">:</span> <span class="token string">'post'</span><span class="token punctuation">,</span>
    data<span class="token operator">:</span> <span class="token punctuation">{</span>
      username<span class="token punctuation">,</span>
      password
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span>

<span class="token keyword">export</span> <span class="token keyword">function</span> <span class="token function">getInfo</span><span class="token punctuation">(</span><span class="token parameter">token</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
  <span class="token keyword">return</span> <span class="token function">request</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
    url<span class="token operator">:</span> <span class="token string">'/serviceedu/user/info'</span><span class="token punctuation">,</span>
    method<span class="token operator">:</span> <span class="token string">'get'</span><span class="token punctuation">,</span>
    params<span class="token operator">:</span> <span class="token punctuation">{</span> token <span class="token punctuation">}</span>
  <span class="token punctuation">}</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h2 id="4-解决跨域问题"><a href="#4-解决跨域问题" class="headerlink" title="4.解决跨域问题"></a>4.解决跨域问题</h2><p>测试登陆，发现报错</p>
<p><img src="https://pluto-1300780100.cos.ap-nanjing.myqcloud.com/img/image-20210117114237663.png" alt="image-20210117114237663"></p>
<p>这是由于跨域而导致的问题，所谓跨域：</p>
<ul>
<li>访问协议</li>
<li>ip地址</li>
<li>端口号</li>
</ul>
<p>这三个有一个不一致就是跨域问题。我们采用CORS解决方案，在<a target="_blank" rel="noopener" href="https://blog.jy741.cn/2020/09/25/464.html">《品优购13—跨域解决方案与提交订单》</a>中介绍过。在接口中添加注解@CrossOrigin即可解决（上面代码已添加）</p>
<p>接着测试发现成功进入</p>
<p><img src="https://pluto-1300780100.cos.ap-nanjing.myqcloud.com/img/image-20210117114159665.png" alt="image-20210117114159665"></p>
<p><img src="https://pluto-1300780100.cos.ap-nanjing.myqcloud.com/img/02-改造登录到本地接口.png" alt="02-改造登录到本地接口"></p>
<h1 id="讲师管理页面开发"><a href="#讲师管理页面开发" class="headerlink" title="讲师管理页面开发"></a>讲师管理页面开发</h1><h2 id="1-添加路由"><a href="#1-添加路由" class="headerlink" title="1.添加路由"></a>1.添加路由</h2><p>修改src\router\index.js</p>
<pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript"><span class="token punctuation">{</span>
   path<span class="token operator">:</span> <span class="token string">'/teacher'</span><span class="token punctuation">,</span>
   component<span class="token operator">:</span> Layout<span class="token punctuation">,</span>
   redirect<span class="token operator">:</span> <span class="token string">'/teacher/table'</span><span class="token punctuation">,</span><span class="token comment">//默认是/teacher/table显示</span>
   name<span class="token operator">:</span> <span class="token string">'讲师管理'</span><span class="token punctuation">,</span>
   meta<span class="token operator">:</span> <span class="token punctuation">{</span> title<span class="token operator">:</span> <span class="token string">'讲师管理'</span><span class="token punctuation">,</span> icon<span class="token operator">:</span> <span class="token string">'example'</span> <span class="token punctuation">}</span><span class="token punctuation">,</span>
   children<span class="token operator">:</span> <span class="token punctuation">[</span>
     <span class="token punctuation">{</span>
       path<span class="token operator">:</span> <span class="token string">'table'</span><span class="token punctuation">,</span>
       name<span class="token operator">:</span> <span class="token string">'讲师列表'</span><span class="token punctuation">,</span>
       <span class="token function-variable function">component</span><span class="token operator">:</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token keyword">import</span><span class="token punctuation">(</span><span class="token string">'@/views/edu/teacher/list'</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
       meta<span class="token operator">:</span> <span class="token punctuation">{</span> title<span class="token operator">:</span> <span class="token string">'讲师列表'</span><span class="token punctuation">,</span> icon<span class="token operator">:</span> <span class="token string">'table'</span> <span class="token punctuation">}</span>
     <span class="token punctuation">}</span><span class="token punctuation">,</span>
     <span class="token punctuation">{</span>
       path<span class="token operator">:</span> <span class="token string">'save'</span><span class="token punctuation">,</span>
       name<span class="token operator">:</span> <span class="token string">'讲师添加'</span><span class="token punctuation">,</span>
       <span class="token function-variable function">component</span><span class="token operator">:</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token keyword">import</span><span class="token punctuation">(</span><span class="token string">'@/views/edu/teacher/save'</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
       meta<span class="token operator">:</span> <span class="token punctuation">{</span> title<span class="token operator">:</span> <span class="token string">'讲师添加'</span><span class="token punctuation">,</span> icon<span class="token operator">:</span> <span class="token string">'tree'</span> <span class="token punctuation">}</span>
     <span class="token punctuation">}</span>
 <span class="token punctuation">}</span><span class="token punctuation">,</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p><img src="https://pluto-1300780100.cos.ap-nanjing.myqcloud.com/img/image-20210117115122298.png" alt="image-20210117115122298"></p>
<p>创建页面list.vue和save.vue</p>
<p><img src="https://pluto-1300780100.cos.ap-nanjing.myqcloud.com/img/03-前端框架开发过程介绍.png" alt="03-前端框架开发过程介绍"></p>
<h2 id="2-讲师列表实现"><a href="#2-讲师列表实现" class="headerlink" title="2.讲师列表实现"></a>2.讲师列表实现</h2><h3 id="2-1定义api"><a href="#2-1定义api" class="headerlink" title="2.1定义api"></a>2.1定义api</h3><p>创建文件 src/api/edu/teacher.js</p>
<pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript"><span class="token keyword">import</span> request <span class="token keyword">from</span> <span class="token string">'@/utils/request'</span>

<span class="token keyword">const</span> teacher_baseurl <span class="token operator">=</span> <span class="token string">'/serviceedu/teacher'</span>

<span class="token keyword">export</span> <span class="token keyword">default</span><span class="token punctuation">{</span>
    <span class="token comment">//1 讲师列表(条件分页)</span>
    <span class="token function">getTeacherListPage</span><span class="token punctuation">(</span><span class="token parameter">current<span class="token punctuation">,</span>limit<span class="token punctuation">,</span>teacherQuery</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
        <span class="token keyword">return</span> <span class="token function">request</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
            url<span class="token operator">:</span> <span class="token template-string"><span class="token template-punctuation string">`</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>teacher_baseurl<span class="token interpolation-punctuation punctuation">}</span></span><span class="token string">/pageCondition/</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>current<span class="token interpolation-punctuation punctuation">}</span></span><span class="token string">/</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>limit<span class="token interpolation-punctuation punctuation">}</span></span><span class="token template-punctuation string">`</span></span><span class="token punctuation">,</span>
            method<span class="token operator">:</span> <span class="token string">'post'</span><span class="token punctuation">,</span>
            <span class="token comment">//teacherQuery条件对象，后端使用的是RequestBody，表示要json数据</span>
            <span class="token comment">//data表示把对象转成json数据传递到接口</span>
            data<span class="token operator">:</span> teacherQuery
        <span class="token punctuation">}</span><span class="token punctuation">)</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h3 id="2-2表格渲染"><a href="#2-2表格渲染" class="headerlink" title="2.2表格渲染"></a>2.2表格渲染</h3><p>src/views/edu/teacher/list.vue</p>
<pre class="line-numbers language-vue" data-language="vue"><code class="language-vue">&lt;template&gt;
  &lt;div class="app-container"&gt;
          &lt;!--查询表单--&gt;
    &lt;el-form :inline="true" class="demo-form-inline"&gt;
      &lt;el-form-item&gt;
        &lt;el-input v-model="teacherQuery.name" placeholder="讲师名"/&gt;
      &lt;/el-form-item&gt;

      &lt;el-form-item&gt;
        &lt;el-select v-model="teacherQuery.level" clearable placeholder="讲师头衔"&gt;
          &lt;el-option :value="1" label="高级讲师"/&gt;
          &lt;el-option :value="2" label="首席讲师"/&gt;
        &lt;/el-select&gt;
      &lt;/el-form-item&gt;

      &lt;el-form-item label="添加时间"&gt;
        &lt;el-date-picker
          v-model="teacherQuery.begin"
          type="datetime"
          placeholder="选择开始时间"
          value-format="yyyy-MM-dd HH:mm:ss"
          default-time="00:00:00"
        /&gt;
      &lt;/el-form-item&gt;
      &lt;el-form-item&gt;
        &lt;el-date-picker
          v-model="teacherQuery.end"
          type="datetime"
          placeholder="选择截止时间"
          value-format="yyyy-MM-dd HH:mm:ss"
          default-time="00:00:00"
        /&gt;
      &lt;/el-form-item&gt;

      &lt;el-button type="primary" icon="el-icon-search" @click="getList()"&gt;查询&lt;/el-button&gt;
      &lt;el-button type="default" @click="resetData()"&gt;清空&lt;/el-button&gt;
    &lt;/el-form&gt;

    &lt;!-- 表格 --&gt;
    &lt;el-table
      v-loading="listLoading"
      :data="list"
      element-loading-text="数据加载中"
      border
      fit
      highlight-current-row&gt;

      &lt;el-table-column
        label="序号"
        width="70"
        align="center"&gt;
        &lt;template slot-scope="scope"&gt;
          {{ (page - 1) * limit + scope.$index + 1 }}
        &lt;/template&gt;
      &lt;/el-table-column&gt;

      &lt;el-table-column prop="name" label="名称" width="80" /&gt;

      &lt;el-table-column label="头衔" width="80"&gt;
        &lt;template slot-scope="scope"&gt;
          {{ scope.row.level===1?'高级讲师':'首席讲师' }}
        &lt;/template&gt;
      &lt;/el-table-column&gt;

      &lt;el-table-column prop="intro" label="资历" /&gt;

      &lt;el-table-column prop="gmtCreate" label="添加时间" width="160"/&gt;

      &lt;el-table-column prop="sort" label="排序" width="60" /&gt;

      &lt;el-table-column label="操作" width="200" align="center"&gt;
        &lt;template slot-scope="scope"&gt;
          &lt;router-link :to="'/teacher/edit/'+scope.row.id"&gt;
            &lt;el-button type="primary" size="mini" icon="el-icon-edit"&gt;修改&lt;/el-button&gt;
          &lt;/router-link&gt;
          &lt;el-button type="danger" size="mini" icon="el-icon-delete" @click="removeDataById(scope.row.id)"&gt;删除&lt;/el-button&gt;
        &lt;/template&gt;
      &lt;/el-table-column&gt;
    &lt;/el-table&gt;

    &lt;!-- 分页 --&gt;
    &lt;el-pagination
      :current-page="page"
      :page-size="limit"
      :total="total"
      style="padding: 30px 0; text-align: center;"
      layout="total, prev, pager, next, jumper"
      @current-change="getList"
    /&gt;

  &lt;/div&gt;
&lt;/template&gt;<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h3 id="2-3查询和分页"><a href="#2-3查询和分页" class="headerlink" title="2.3查询和分页"></a>2.3查询和分页</h3><pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript"><span class="token operator">&lt;</span>script<span class="token operator">&gt;</span>
<span class="token comment">//引入teacher.js文件</span>
<span class="token keyword">import</span> teacher <span class="token keyword">from</span> <span class="token string">'@/api/edu/teacher'</span>

<span class="token keyword">export</span> <span class="token keyword">default</span> <span class="token punctuation">{</span>
    <span class="token function">data</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span><span class="token comment">//定义变量和初始值</span>
        <span class="token keyword">return</span> <span class="token punctuation">{</span>
            list<span class="token operator">:</span><span class="token keyword">null</span><span class="token punctuation">,</span><span class="token comment">//查询之后返回的讲师列表</span>
            page<span class="token operator">:</span><span class="token number">1</span><span class="token punctuation">,</span><span class="token comment">//当前页</span>
            limit<span class="token operator">:</span><span class="token number">10</span><span class="token punctuation">,</span><span class="token comment">//每页数量</span>
            total<span class="token operator">:</span><span class="token number">0</span><span class="token punctuation">,</span><span class="token comment">//总数量</span>
            teacherQuery<span class="token operator">:</span><span class="token punctuation">{</span><span class="token punctuation">}</span><span class="token comment">//条件封装对象</span>
        <span class="token punctuation">}</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span>
    <span class="token function">created</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span><span class="token comment">//页面渲染之前调用</span>
        <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getList</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span>
    methods<span class="token operator">:</span> <span class="token punctuation">{</span><span class="token comment">//定义方法</span>
        <span class="token comment">//分页查询</span>
        <span class="token function">getList</span><span class="token punctuation">(</span><span class="token parameter">page <span class="token operator">=</span><span class="token number">1</span></span><span class="token punctuation">)</span><span class="token punctuation">{</span><span class="token comment">//page默认为1</span>
            <span class="token keyword">this</span><span class="token punctuation">.</span>page <span class="token operator">=</span> page
            teacher<span class="token punctuation">.</span><span class="token function">getTeacherListPage</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>page<span class="token punctuation">,</span><span class="token keyword">this</span><span class="token punctuation">.</span>limit<span class="token punctuation">,</span><span class="token keyword">this</span><span class="token punctuation">.</span>teacherQuery<span class="token punctuation">)</span>
                <span class="token punctuation">.</span><span class="token function">then</span><span class="token punctuation">(</span><span class="token parameter">res</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span><span class="token comment">//请求成功</span>
                    <span class="token keyword">this</span><span class="token punctuation">.</span>total<span class="token operator">=</span>res<span class="token punctuation">.</span>data<span class="token punctuation">.</span>total
                    <span class="token keyword">this</span><span class="token punctuation">.</span>list <span class="token operator">=</span> res<span class="token punctuation">.</span>data<span class="token punctuation">.</span>rows
                <span class="token punctuation">}</span><span class="token punctuation">)</span>
        <span class="token punctuation">}</span><span class="token punctuation">,</span>
        <span class="token function">resetData</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span><span class="token comment">//清空查询条件</span>
            <span class="token keyword">this</span><span class="token punctuation">.</span>teacherQuery <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token punctuation">}</span>
            <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getList</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
        <span class="token punctuation">}</span>
    <span class="token punctuation">}</span> 
<span class="token punctuation">}</span>
<span class="token operator">&lt;</span><span class="token operator">/</span>script<span class="token operator">&gt;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p><img src="https://pluto-1300780100.cos.ap-nanjing.myqcloud.com/img/04-讲师列表前端开发.png" alt="04-讲师列表前端开发"></p>
<p><img src="https://pluto-1300780100.cos.ap-nanjing.myqcloud.com/img/05-讲师列表前端开发（分页和条件查询）.png" alt="05-讲师列表前端开发（分页和条件查询）"></p>
<h2 id="3-讲师删除"><a href="#3-讲师删除" class="headerlink" title="3.讲师删除"></a>3.讲师删除</h2><p>（1）定义api</p>
<pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript"><span class="token comment">//删除讲师</span>
<span class="token function">removeById</span><span class="token punctuation">(</span><span class="token parameter">id</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
    <span class="token keyword">return</span> <span class="token function">request</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
        url<span class="token operator">:</span> <span class="token template-string"><span class="token template-punctuation string">`</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>teacher_baseurl<span class="token interpolation-punctuation punctuation">}</span></span><span class="token string">/delete/</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>id<span class="token interpolation-punctuation punctuation">}</span></span><span class="token template-punctuation string">`</span></span><span class="token punctuation">,</span>
        method<span class="token operator">:</span> <span class="token string">'delete'</span>
    <span class="token punctuation">}</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span><span class="token punctuation">,</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>（2）定义methods，使用MessageBox 弹框组件</p>
<pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript"><span class="token comment">//逻辑删除</span>
<span class="token function">removeDataById</span><span class="token punctuation">(</span><span class="token parameter">id</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
    <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">$confirm</span><span class="token punctuation">(</span><span class="token string">'此操作将永久删除该文件, 是否继续?'</span><span class="token punctuation">,</span> <span class="token string">'提示'</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>
        confirmButtonText<span class="token operator">:</span> <span class="token string">'确定'</span><span class="token punctuation">,</span>
        cancelButtonText<span class="token operator">:</span> <span class="token string">'取消'</span><span class="token punctuation">,</span>
        type<span class="token operator">:</span> <span class="token string">'warning'</span>
    <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">then</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
        teacher<span class="token punctuation">.</span><span class="token function">removeById</span><span class="token punctuation">(</span>id<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">then</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
            <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">$message</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
                type<span class="token operator">:</span> <span class="token string">'success'</span><span class="token punctuation">,</span>
                message<span class="token operator">:</span> <span class="token string">'删除成功!'</span>
            <span class="token punctuation">}</span><span class="token punctuation">)</span>
            <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getList</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
        <span class="token punctuation">}</span><span class="token punctuation">)</span>
    <span class="token punctuation">}</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p><img src="https://pluto-1300780100.cos.ap-nanjing.myqcloud.com/img/06-讲师删除功能前端实现.png" alt="06-讲师删除功能前端实现"></p>
<h2 id="4-讲师添加和更新"><a href="#4-讲师添加和更新" class="headerlink" title="4.讲师添加和更新"></a>4.讲师添加和更新</h2><h3 id="4-1定义api"><a href="#4-1定义api" class="headerlink" title="4.1定义api"></a>4.1定义api</h3><pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript"><span class="token comment">//添加讲师</span>
    <span class="token function">save</span><span class="token punctuation">(</span><span class="token parameter">teacher</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
        <span class="token keyword">return</span> <span class="token function">request</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
            url<span class="token operator">:</span> <span class="token template-string"><span class="token template-punctuation string">`</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>teacher_baseurl<span class="token interpolation-punctuation punctuation">}</span></span><span class="token string">/add</span><span class="token template-punctuation string">`</span></span><span class="token punctuation">,</span>
            method<span class="token operator">:</span> <span class="token string">'post'</span><span class="token punctuation">,</span>
            data<span class="token operator">:</span> teacher
        <span class="token punctuation">}</span><span class="token punctuation">)</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span>
    <span class="token comment">//根据id查询讲师</span>
    <span class="token function">getInfoById</span><span class="token punctuation">(</span><span class="token parameter">id</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
        <span class="token keyword">return</span> <span class="token function">request</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
            url<span class="token operator">:</span> <span class="token template-string"><span class="token template-punctuation string">`</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>teacher_baseurl<span class="token interpolation-punctuation punctuation">}</span></span><span class="token string">/getById/</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>id<span class="token interpolation-punctuation punctuation">}</span></span><span class="token template-punctuation string">`</span></span><span class="token punctuation">,</span>
            method<span class="token operator">:</span> <span class="token string">'get'</span>
        <span class="token punctuation">}</span><span class="token punctuation">)</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span>
    <span class="token comment">//根据id修改讲师</span>
    <span class="token function">updateById</span><span class="token punctuation">(</span><span class="token parameter">teacher</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
        <span class="token keyword">return</span> <span class="token function">request</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
            url<span class="token operator">:</span> <span class="token template-string"><span class="token template-punctuation string">`</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>teacher_baseurl<span class="token interpolation-punctuation punctuation">}</span></span><span class="token string">/update</span><span class="token template-punctuation string">`</span></span><span class="token punctuation">,</span>
            method<span class="token operator">:</span> <span class="token string">'post'</span><span class="token punctuation">,</span>
            data<span class="token operator">:</span> teacher
        <span class="token punctuation">}</span><span class="token punctuation">)</span>
    <span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h3 id="4-2初始化组件"><a href="#4-2初始化组件" class="headerlink" title="4.2初始化组件"></a>4.2初始化组件</h3><pre class="line-numbers language-vue" data-language="vue"><code class="language-vue">&lt;template&gt;
  &lt;div class="app-container"&gt;
    &lt;el-form label-width="120px"&gt;
      &lt;el-form-item label="讲师名称"&gt;
        &lt;el-input v-model="teacher.name"/&gt;
      &lt;/el-form-item&gt;
      &lt;el-form-item label="讲师排序"&gt;
        &lt;el-input-number v-model="teacher.sort" controls-position="right" min="0"/&gt;
      &lt;/el-form-item&gt;
      &lt;el-form-item label="讲师头衔"&gt;
        &lt;el-select v-model="teacher.level" clearable placeholder="请选择"&gt;
          &lt;!--
            数据类型一定要和取出的json中的一致，否则没法回填
            因此，这里value使用动态绑定的值，保证其数据类型是number
          --&gt;
          &lt;el-option :value="1" label="高级讲师"/&gt;
          &lt;el-option :value="2" label="首席讲师"/&gt;
        &lt;/el-select&gt;
      &lt;/el-form-item&gt;
      &lt;el-form-item label="讲师资历"&gt;
        &lt;el-input v-model="teacher.career"/&gt;
      &lt;/el-form-item&gt;
      &lt;el-form-item label="讲师简介"&gt;
        &lt;el-input v-model="teacher.intro" :rows="10" type="textarea"/&gt;
      &lt;/el-form-item&gt;

      &lt;!-- 讲师头像：TODO --&gt;

      &lt;el-form-item&gt;
        &lt;el-button :disabled="saveBtnDisabled" type="primary" @click="saveOrUpdate"&gt;保存&lt;/el-button&gt;
      &lt;/el-form-item&gt;
    &lt;/el-form&gt;
  &lt;/div&gt;
&lt;/template&gt;<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h3 id="4-3更新路由"><a href="#4-3更新路由" class="headerlink" title="4.3更新路由"></a>4.3更新路由</h3><p>由于我们添加和更新都在一个页面，所以我们需要更新一下路由</p>
<p>修改按钮：</p>
<pre class="line-numbers language-vue" data-language="vue"><code class="language-vue">&lt;router-link :to="'/teacher/edit/'+scope.row.id"&gt;
    &lt;el-button type="primary" size="mini" icon="el-icon-edit"&gt;修改&lt;/el-button&gt;
&lt;/router-link&gt;<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span></span></code></pre>
<p>路由：</p>
<pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript"><span class="token punctuation">{</span>
        path<span class="token operator">:</span> <span class="token string">'edit/:id'</span><span class="token punctuation">,</span><span class="token comment">//:id表示带参数</span>
        name<span class="token operator">:</span> <span class="token string">'EduTeacherEdit'</span><span class="token punctuation">,</span>
        <span class="token function-variable function">component</span><span class="token operator">:</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token keyword">import</span><span class="token punctuation">(</span><span class="token string">'@/views/edu/teacher/save'</span><span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token comment">//指向同一个页面</span>
        meta<span class="token operator">:</span> <span class="token punctuation">{</span> title<span class="token operator">:</span> <span class="token string">'编辑讲师'</span><span class="token punctuation">,</span> noCache<span class="token operator">:</span> <span class="token boolean">true</span> <span class="token punctuation">}</span><span class="token punctuation">,</span>
        hidden<span class="token operator">:</span> <span class="token boolean">true</span>
      <span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h3 id="4-4完善方法"><a href="#4-4完善方法" class="headerlink" title="4.4完善方法"></a>4.4完善方法</h3><pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript"><span class="token operator">&lt;</span>script<span class="token operator">&gt;</span>
<span class="token keyword">import</span> teacherApi <span class="token keyword">from</span> <span class="token string">'@/api/edu/teacher'</span>

<span class="token keyword">export</span> <span class="token keyword">default</span> <span class="token punctuation">{</span>
    <span class="token function">data</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
        <span class="token keyword">return</span> <span class="token punctuation">{</span>
            teacher<span class="token operator">:</span> <span class="token punctuation">{</span><span class="token punctuation">}</span><span class="token punctuation">,</span>
            saveBtnDisabled<span class="token operator">:</span> <span class="token boolean">false</span> <span class="token comment">// 保存按钮是否禁用,</span>
        <span class="token punctuation">}</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span>
    <span class="token function">created</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
        <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">init</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span>
    methods<span class="token operator">:</span> <span class="token punctuation">{</span>
        <span class="token function">init</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
            <span class="token comment">//根据参数判断是添加还是修改</span>
            <span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>$route<span class="token punctuation">.</span>params <span class="token operator">&amp;&amp;</span> <span class="token keyword">this</span><span class="token punctuation">.</span>$route<span class="token punctuation">.</span>params<span class="token punctuation">.</span>id<span class="token punctuation">)</span> <span class="token punctuation">{</span>
                <span class="token keyword">const</span> id <span class="token operator">=</span> <span class="token keyword">this</span><span class="token punctuation">.</span>$route<span class="token punctuation">.</span>params<span class="token punctuation">.</span>id
                <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getTeacher</span><span class="token punctuation">(</span>id<span class="token punctuation">)</span>
            <span class="token punctuation">}</span><span class="token keyword">else</span><span class="token punctuation">{</span><span class="token comment">//添加需要把teacher值清空</span>
                <span class="token keyword">this</span><span class="token punctuation">.</span>teacher <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token punctuation">}</span>
            <span class="token punctuation">}</span>
        <span class="token punctuation">}</span><span class="token punctuation">,</span>

        <span class="token function">saveOrUpdate</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
            <span class="token keyword">this</span><span class="token punctuation">.</span>saveBtnDisabled <span class="token operator">=</span> <span class="token boolean">true</span>
            <span class="token keyword">if</span><span class="token punctuation">(</span><span class="token operator">!</span><span class="token keyword">this</span><span class="token punctuation">.</span>teacher<span class="token punctuation">.</span>id<span class="token punctuation">)</span><span class="token punctuation">{</span>
                <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">saveData</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
            <span class="token punctuation">}</span><span class="token keyword">else</span><span class="token punctuation">{</span>
                <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">update</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
            <span class="token punctuation">}</span>
        <span class="token punctuation">}</span><span class="token punctuation">,</span>

        <span class="token comment">// 保存</span>
        <span class="token function">saveData</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
            teacherApi<span class="token punctuation">.</span><span class="token function">save</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>teacher<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">then</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
                <span class="token keyword">this</span><span class="token punctuation">.</span>$message<span class="token punctuation">.</span><span class="token function">success</span><span class="token punctuation">(</span><span class="token string">"添加成功！"</span><span class="token punctuation">)</span>
                <span class="token comment">//回到列表页面 跳转路由</span>
                <span class="token keyword">this</span><span class="token punctuation">.</span>$router<span class="token punctuation">.</span><span class="token function">push</span><span class="token punctuation">(</span><span class="token punctuation">{</span>path<span class="token operator">:</span><span class="token string">'/teacher/table'</span><span class="token punctuation">}</span><span class="token punctuation">)</span>
            <span class="token punctuation">}</span><span class="token punctuation">)</span>
        <span class="token punctuation">}</span><span class="token punctuation">,</span>
        <span class="token function">update</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
            teacherApi<span class="token punctuation">.</span><span class="token function">updateById</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>teacher<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">then</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">=&gt;</span><span class="token punctuation">{</span>
                <span class="token keyword">this</span><span class="token punctuation">.</span>$message<span class="token punctuation">.</span><span class="token function">success</span><span class="token punctuation">(</span><span class="token string">"修改成功！"</span><span class="token punctuation">)</span>
                <span class="token comment">//回到列表页面 跳转路由</span>
                <span class="token keyword">this</span><span class="token punctuation">.</span>$router<span class="token punctuation">.</span><span class="token function">push</span><span class="token punctuation">(</span><span class="token punctuation">{</span>path<span class="token operator">:</span><span class="token string">'/teacher/table'</span><span class="token punctuation">}</span><span class="token punctuation">)</span>
            <span class="token punctuation">}</span><span class="token punctuation">)</span>
        <span class="token punctuation">}</span><span class="token punctuation">,</span>

        <span class="token comment">//根据id查询</span>
        <span class="token function">getTeacher</span><span class="token punctuation">(</span><span class="token parameter">id</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
            teacherApi<span class="token punctuation">.</span><span class="token function">getInfoById</span><span class="token punctuation">(</span>id<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">then</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token parameter">res</span><span class="token punctuation">)</span><span class="token operator">=&gt;</span><span class="token punctuation">{</span>
                <span class="token keyword">this</span><span class="token punctuation">.</span>teacher <span class="token operator">=</span> res<span class="token punctuation">.</span>data<span class="token punctuation">.</span>item
            <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">catch</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">=&gt;</span><span class="token punctuation">{</span>
                <span class="token keyword">this</span><span class="token punctuation">.</span>$message<span class="token punctuation">.</span><span class="token function">error</span><span class="token punctuation">(</span><span class="token string">"获取数据失败"</span><span class="token punctuation">)</span>
            <span class="token punctuation">}</span><span class="token punctuation">)</span>
        <span class="token punctuation">}</span>

  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
<span class="token operator">&lt;</span><span class="token operator">/</span>script<span class="token operator">&gt;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p><img src="https://pluto-1300780100.cos.ap-nanjing.myqcloud.com/img/08-讲师修改功能前端实现.png" alt="08-讲师修改功能前端实现"></p>
<h3 id="4-5存在问题"><a href="#4-5存在问题" class="headerlink" title="4.5存在问题"></a>4.5存在问题</h3><p>vue-router导航切换 时，如果两个路由都渲染同个组件，组件会重（chong）用,</p>
<p>组件的生命周期钩子（created）不会再被调用, 使得组件的一些数据无法根据 path的改变得到更新</p>
<p>因此：</p>
<p>1、我们可以在watch中监听路由的变化，当路由变化时，重新调用created中的内容</p>
<p>2、在init方法中我们判断路由的变化，如果是修改路由，则从api获取表单数据，如果是新增路由，则重新初始化表单数据</p>
<pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript">watch<span class="token operator">:</span> <span class="token punctuation">{</span><span class="token comment">//监听</span>
    <span class="token function">$route</span><span class="token punctuation">(</span><span class="token parameter">to<span class="token punctuation">,</span> <span class="token keyword">from</span></span><span class="token punctuation">)</span> <span class="token punctuation">{</span><span class="token comment">//当路由发生改变时调用此方法</span>
        console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token string">'watch $route'</span><span class="token punctuation">)</span>
        <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">init</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span><span class="token punctuation">,</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p><img src="https://pluto-1300780100.cos.ap-nanjing.myqcloud.com/img/10-路由切换问题.png" alt="10-路由切换问题"></p>

                
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                        if (isMatch) {
                            str += "<li><a href='" + data_url + "' class='search-result-title'>" + data_title + "</a>";
                            var content = data.content.trim().replace(/<[^>]+>/g, "");
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                                var end = first_occur + 80;
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                                    start = 0;
                                }
                                if (start === 0) {
                                    end = 100;
                                }
                                if (end > content.length) {
                                    end = content.length;
                                }
                                var match_content = content.substr(start, end);
                                // highlight all keywords
                                keywords.forEach(function (keyword) {
                                    var regS = new RegExp(keyword, "gi");
                                    match_content = match_content.replace(regS, "<em class=\"search-keyword\">" + keyword + "</em>");
                                });

                                str += "<p class=\"search-result\">" + match_content + "...</p>"
                            }
                            str += "</li>";
                        }
                    });
                    str += "</ul>";
                    $resultContent.innerHTML = str;
                });
            }
        });
    };

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});
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